Content distribution storage system, method for obtaining content, node device, and computer readable medium
First Claim
1. A content distribution storage system in which a plurality of node devices are connected via a network and are capable of transmitting and receiving a content to and from one another, the system comprising:
- a first transmission unit configured to transmit a special content to a first node device of the plurality of node devices, the special content comprising certificate revocation list information indicating a list of at least an invalid electronic certificate;
a second transmission unit configured to transmit identification information for identifying the special content to a second node device of the plurality of node devices; and
a third node device that is one of the plurality of node devices, the third node device comprising;
a certificate obtaining unit configured to obtain an electronic certificate from a particular node device, the particular node device being one of the plurality of node devices, the electronic certificate being used to authenticate the particular node device;
an identification information obtaining unit configured, based on the electronic certificate obtained by the certificate obtaining unit, to obtain the identification information of the special content comprising the certificate revocation list information corresponding to the electronic certificate obtained by the certificate obtaining unit, the identification information obtaining unit obtaining the identification information from one of the second node device and a node device to which the identification information is transferred from the second node device; and
a special content obtaining unit configured to obtain the special content comprising the certificate revocation list information from one of the first node device and a node device which stores the special content associated with the identification information obtained by the identification information obtaining unit.
1 Assignment
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Accused Products
Abstract
A content distribution storage system includes: a first transmission unit configured to transmit a special content including certificate revocation list information indicating a list of at least an invalid electronic certificate to a first node group; a second transmission unit configured to transmit identification information for identifying the special content to a second node group; and a first node device. The first node device includes: a certificate obtaining unit configured to obtain the electronic certificate; an identification information obtaining unit configured, based on the obtained electronic certificate, to obtain the identification information of the special content comprising the certificate revocation list information corresponding to the obtained electronic certificate obtained; and a special content obtaining unit configured to obtain the special content from at least one node device of the first node group which stores the special content associated with the obtained identification information.
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Citations
16 Claims
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1. A content distribution storage system in which a plurality of node devices are connected via a network and are capable of transmitting and receiving a content to and from one another, the system comprising:
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a first transmission unit configured to transmit a special content to a first node device of the plurality of node devices, the special content comprising certificate revocation list information indicating a list of at least an invalid electronic certificate; a second transmission unit configured to transmit identification information for identifying the special content to a second node device of the plurality of node devices; and a third node device that is one of the plurality of node devices, the third node device comprising; a certificate obtaining unit configured to obtain an electronic certificate from a particular node device, the particular node device being one of the plurality of node devices, the electronic certificate being used to authenticate the particular node device; an identification information obtaining unit configured, based on the electronic certificate obtained by the certificate obtaining unit, to obtain the identification information of the special content comprising the certificate revocation list information corresponding to the electronic certificate obtained by the certificate obtaining unit, the identification information obtaining unit obtaining the identification information from one of the second node device and a node device to which the identification information is transferred from the second node device; and a special content obtaining unit configured to obtain the special content comprising the certificate revocation list information from one of the first node device and a node device which stores the special content associated with the identification information obtained by the identification information obtaining unit. - View Dependent Claims (2, 3, 12, 16)
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4. A node device connected to a plurality of other node devices via a network and capable of transmitting and receiving a content to and from the plurality of other node devices in a content distribution storage system, the node device comprising:
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a certificate obtaining unit configured to obtain an electronic certificate from a particular node device, the particular node device being one of the plurality of other node devices, the electronic certificate being used to authenticate the particular node device; an identification information obtaining unit configured, based on the electronic certificate obtained by the certificate obtaining unit, to obtain identification information of a special content comprising certificate revocation list information corresponding to the electronic certificate obtained by the certificate obtaining unit, from at least one node device of a first node group, the first node group comprising one or more node devices of the plurality of other node devices which store the identification information; and a special content obtaining unit configured to obtain the special content comprising the certificate revocation list information from at least one node device of a second node group, the second node group comprising one or more node devices of the plurality of other node devices which store the special content associated with the identification information obtained by the identification information obtaining unit. - View Dependent Claims (5, 6, 7, 8, 9, 13)
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10. A non-transitory computer-readable storage medium that stores a computer-executable program, the program being installed in the computer contained in a node device, the node device being connected to a plurality of other node devices via a network and capable of transmitting and receiving a content to and from the plurality of other node devices in a content distribution storage system, the program comprising instructions for:
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obtaining an electronic certificate from a particular node device, the particular node device being one of the plurality of other node devices, the electronic certificate being used to authenticate the particular node device; obtaining, based on the obtained electronic certificate, identification information of a special content comprising certificate revocation list information corresponding to the obtained electronic certificate, from a node device of the plurality of other node devices which store the identification information; and obtaining the special content comprising the certificate revocation list information from a node device of the plurality of other node devices which store the special content associated with the obtained identification information obtained. - View Dependent Claims (14)
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11. A method for obtaining a content in a content distribution storage system in which a plurality of node devices are connected via a network and are capable of transmitting and receiving a content to and from one another, the method comprising:
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transmitting a special content from a first transmission unit to a first node device of the plurality of node devices, the special content comprising certificate revocation list information indicating a list of at least an invalid electronic certificate; and transmitting identification information for identifying the special content from a second transmission unit to a second node device of the plurality of node devices; wherein the plurality of node devices comprises a third node device, the third node device performing the steps of; obtaining an electronic certificate of a particular node device, the particular node device being one of the plurality of node devices, the electronic certificate being used to authenticate the particular node device; obtaining, based on the obtained electronic certificate, the identification information of the special content comprising the certificate revocation list information corresponding to the obtained electronic certificate, the identification information being obtained from the one of the second node device and a node device to which the identification information is transferred from the second node device; and obtaining the special content comprising the certificate revocation list information from one of the first node device and a node device which stores the special content associated with the obtained identification information. - View Dependent Claims (15)
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Specification